Loading water data...
Lead is a toxic heavy metal that causes irreversible brain damage in children and serious health problems in adults. There is no safe level of lead exposure. Learn about the risks, how lead enters your water, and how to protect your family.
Lead is a naturally occurring heavy metal that has been used in plumbing materials for thousands of years due to its malleability and resistance to corrosion. The word "plumbing" itself derives from the Latin word for lead, "plumbum." In the United States, lead was commonly used in water pipes, solder, and fixtures until the Safe Drinking Water Act amendments of 1986 banned lead pipes and limited lead content in plumbing materials.
Despite this ban, an estimated 9.2 million lead service lines remain in use across the country, connecting homes to water mains. Homes built before 1986 are at significant risk of having lead pipes, lead solder joining copper pipes, or brass fixtures containing lead. Even homes built after 1986 may have fixtures that contain up to 8% lead, as "lead-free" plumbing was not required to be truly lead-free until 2014.
Lead is particularly insidious because you cannot see, taste, or smell it in water. Unlike many contaminants that cause immediate illness, lead poisoning occurs gradually as the metal accumulates in bones, blood, and organs over time. The effects are often not apparent until significant damage has occurred, making prevention and regular testing critically important.
The Flint Water Crisis: In 2014-2015, cost-cutting measures in Flint, Michigan led to a switch in water sources without proper corrosion control. The more corrosive water leached lead from aging pipes, exposing over 100,000 residents to dangerous lead levels. Thousands of children were affected, with blood lead levels doubling or even tripling. This crisis highlighted how quickly lead contamination can occur when water chemistry changes.
Lead affects virtually every system in the body, but the severity and nature of effects vary significantly by age and life stage. The developing nervous systems of children are particularly vulnerable, making lead exposure a critical concern for families with young children.
Children absorb 4-5 times more lead from a given exposure than adults. Their developing brains are highly susceptible to lead damage, which can result in permanent cognitive and behavioral impairments.
Lead stored in bones can be released during pregnancy, crossing the placenta to affect the developing fetus even if current exposure is low.
Adults are less susceptible than children but still face serious health consequences from chronic lead exposure.
Critical Warning: There is NO safe level of lead exposure. Even low blood lead levels previously considered "safe" are now known to cause harm. The CDC no longer uses the term "safe level" and instead uses a Blood Lead Reference Value (BLRV) of 3.5 mcg/dL to identify children requiring intervention.
If more than 10% of tap water samples exceed this level, utilities must take corrective action.
The only truly safe level. Any detectable lead poses some health risk.
The EPA finalized LCRR in 2021, strengthening protections by requiring utilities to identify and replace all lead service lines, improve testing protocols, and better protect children in schools and childcare facilities. Full compliance is required by October 2024.
The 15 ppb action level is NOT a health-based standard - it is a trigger for corrective action. Health experts recommend taking action at ANY detectable level, especially in homes with children or pregnant women. The American Academy of Pediatrics recommends lead levels in school drinking water be below 1 ppb.
Lead rarely exists naturally in water sources. It enters drinking water primarily through corrosion of plumbing materials in homes, buildings, and service lines connecting properties to water mains. Several factors influence how much lead leaches into water.
The pipe connecting your home to the water main may be made of lead. An estimated 9.2 million lead service lines remain in use across the US, concentrated in older cities in the Midwest and Northeast. These are the largest source of lead contamination in drinking water.
Until 1986, lead-based solder was commonly used to join copper pipes. Corrosion at these joints releases lead into water. Hot water and water that sits in pipes overnight has more contact time with solder, resulting in higher lead levels.
Brass is an alloy of copper and zinc that often contains lead. Faucets, valves, and fittings can leach lead, especially when new (first few months of use). Until 2014, "lead-free" brass could contain up to 8% lead.
Water that is more corrosive (low pH, low mineral content) dissolves more lead from pipes. This was the key factor in Flint - when the water source changed to more corrosive water without proper treatment, lead leaching increased dramatically.
Lead contamination is most prevalent in older industrial cities with aging infrastructure. However, lead pipes exist in communities of all sizes across the country.
Note: Lead pipes can exist anywhere. New EPA rules require all water utilities to inventory their service line materials by October 2024. Check with your water utility or use the EPA's resources to determine if your home has a lead service line.
Municipal water testing cannot capture lead from your home's plumbing - lead enters water after it leaves the treatment plant. The only way to know if your tap water contains lead is to test it at your home.
Cost: $20-150
Cost: $10-40
Effectiveness: Removes 95-99% of lead
The gold standard for lead removal. Point-of-use systems install under the kitchen sink and provide clean water at a dedicated faucet. Requires periodic membrane and filter replacement. Also removes many other contaminants.
Cost: $200-600 installed, plus $50-100/year maintenance
Effectiveness: Removes 95%+ of lead (if certified)
Look specifically for NSF/ANSI 53 certification for lead reduction. Available in pitcher, faucet-mount, and under-sink formats. Brita Longlast and PUR filters are among those certified for lead.
Cost: $20-150, plus replacement filters
Effectiveness: Removes 99%+ of lead
Boils water and condenses the steam, leaving lead behind. Very effective but slow and energy-intensive. Produces 1-2 gallons per day.
Cost: $100-400
The permanent solution is replacing lead pipes and fixtures. Contact your water utility about lead service line replacement programs - many cities now offer subsidies or free replacement. Full replacement (both utility and homeowner portions) is essential; partial replacement can temporarily increase lead levels.
No. Lead is invisible, odorless, and tasteless. You cannot detect lead contamination without testing. This is what makes lead so dangerous - exposure can occur for years without any obvious signs.
No. Water softeners exchange calcium and magnesium ions for sodium ions and do not remove lead. In some cases, softened water may actually be more corrosive and leach more lead from pipes. Use a certified lead removal filter for drinking water.
Generally yes. Lead is not significantly absorbed through skin, and you do not ingest much water while showering. The primary risk is from drinking and cooking with contaminated water. However, avoid letting young children drink bath water.
Check where the water pipe enters your home. Lead pipes are dull gray and can be scratched with a key to reveal shiny silver metal. Copper appears reddish-brown, galvanized steel is gray but will not scratch to silver, and plastic is typically blue or black. Your water utility may also have records of service line materials.
The CDC recommends blood lead testing for all children at ages 1 and 2, and for older children who may have been exposed. If you have elevated lead in your water and young children, consult your pediatrician about blood lead testing. Early detection allows for intervention before permanent damage occurs.